CN100347345C - 一种制备多枝状羟基氧化锰单晶纳米花的方法 - Google Patents
一种制备多枝状羟基氧化锰单晶纳米花的方法 Download PDFInfo
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- CN100347345C CN100347345C CNB2006100495461A CN200610049546A CN100347345C CN 100347345 C CN100347345 C CN 100347345C CN B2006100495461 A CNB2006100495461 A CN B2006100495461A CN 200610049546 A CN200610049546 A CN 200610049546A CN 100347345 C CN100347345 C CN 100347345C
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- PVIFNYFAXIMOKR-UHFFFAOYSA-M manganese(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Mn+3] PVIFNYFAXIMOKR-UHFFFAOYSA-M 0.000 title claims abstract description 20
- 239000013078 crystal Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000012286 potassium permanganate Substances 0.000 claims abstract description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 229960003511 macrogol Drugs 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 5
- 239000012456 homogeneous solution Substances 0.000 claims description 5
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 5
- -1 polyoxyethylene Polymers 0.000 claims description 5
- IQXJCCZJOIKIAD-UHFFFAOYSA-N 1-(2-methoxyethoxy)hexadecane Chemical compound CCCCCCCCCCCCCCCCOCCOC IQXJCCZJOIKIAD-UHFFFAOYSA-N 0.000 claims description 3
- 229950009789 cetomacrogol 1000 Drugs 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 239000012467 final product Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000009776 industrial production Methods 0.000 abstract description 3
- 239000002808 molecular sieve Substances 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 abstract description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 2
- 230000035484 reaction time Effects 0.000 abstract description 2
- 239000002202 Polyethylene glycol Substances 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 238000001027 hydrothermal synthesis Methods 0.000 abstract 1
- 239000007800 oxidant agent Substances 0.000 abstract 1
- 229920001223 polyethylene glycol Polymers 0.000 abstract 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 13
- 229910052748 manganese Inorganic materials 0.000 description 13
- 239000011572 manganese Substances 0.000 description 13
- 239000000047 product Substances 0.000 description 11
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000002003 electron diffraction Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000000634 powder X-ray diffraction Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 2
- 150000002927 oxygen compounds Chemical class 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000003828 vacuum filtration Methods 0.000 description 2
- 229910008090 Li-Mn-O Inorganic materials 0.000 description 1
- 229910006369 Li—Mn—O Inorganic materials 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229960000935 dehydrated alcohol Drugs 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
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Abstract
本发明公开了一种制备多枝状羟基氧化锰单晶纳米花的方法,该方法是以高锰酸钾为氧化剂,聚乙二醇为还原剂,在密闭反应器中,于100~200℃的温度下进行水热反应,通过控制反应温度、反应时间和原料配比,可制备出多枝状羟基氧化锰单晶纳米花,各分枝的直径在40~100nm,长度为800~1200nm。该方法原料廉价易得,工艺简单,成本低,产品纯度高,质量稳定,易于实现规模化工业生产。制得的多枝状羟基氧化锰单晶纳米花可广泛用于锂离子电池、分子筛等以及相关领域的基础理论研究。
Description
技术领域
本发明涉及一种纳米材料的制备方法,具体涉及多枝状羟基氧化锰单晶纳米花的制备方法。
背景技术
锰的氢氧化合物在电化学、电池、电致变色等领域都有着十分重要的用途。羟基氧化锰亦可作为Li-Mn-O尖晶石结构和MnO2等其他锰氧化合物的前驱体,而锰氧化合物在二次电池、分子筛以及催化方面有着十分优越的性能,也一直受到科学界广泛的关注。目前,羟基氧化锰纳米材料合成的报道主要是纳米棒的合成,Sharma等[Materials Letters 2001,48,319]在表面活性剂辅助下水热合成了羟基氧化锰纳米棒,Zhang Yuangguang等[Solid State Communications2005,124,523]在无表面活性剂辅助下还原水热合成了羟基氧化锰纳米棒,董喜燕等[化学学报,2004,62,2441]用反胶束法合成了羟基氧化锰纳米棒,多枝状纳米花结构的羟基氧化锰的合成还未见报道。
发明内容
本发明的目的是提供一种利于实现规模化工业生产,工艺简单,成本低,产品质量稳定的制备多枝状羟基氧化锰单晶纳米花的方法。
本发明的制备多枝状羟基氧化锰单晶纳米花的方法,以高锰酸钾为氧化剂,聚乙二醇为还原剂,在密闭反应器中进行,其步骤如下:
1)将高锰酸钾和聚乙二醇按物质的量之比为0.5~3∶10~20加入到去离子水中,搅拌至均匀溶液;
2)将上述溶液放入密闭容器反应釜中,在100~200℃温度条件下反应8~16小时,然后冷却至室温,过滤、洗涤、干燥,即可。
本发明中,所说的聚乙二醇可以是聚乙二醇200、聚乙二醇10000或聚乙二醇20000。
本发明中,步骤1)的搅拌一般为5~30分钟;所说的干燥采用常规真空干燥;所说的洗涤是采用去离子水及无水乙醇洗除未反应的多余的离子。
本发明通过控制水热反应温度、反应时间和原料配比,可制备出多枝状羟基氧化锰单晶纳米花。制得的多枝状羟基氧化锰单晶纳米花各分枝的直径在40~100nm,长度为800~1200nm。
本发明方法原料廉价易得,工艺简单,成本低,产品纯度高,质量稳定,重复性好,有利于规模化工业生产。制得的多枝状羟基氧化锰单晶纳米花可广泛用于锂离子电池、分子筛等以及相关领域的基础理论研究。
附图说明
图1是多枝状羟基氧化锰单晶纳米花的XRD图;
图2是多枝状羟基氧化锰单晶纳米花的透射电镜照片;
图3是单个多枝状羟基氧化锰单晶纳米花的透射电镜照片;
图4是单个多枝状羟基氧化锰单晶纳米花的局部放大透射电镜照片;
图5是单根分枝羟基氧化锰的电子衍射照片。
具体实施方式
具体实施方式
实施例1
将0.325克分析纯高锰酸钾和2ml聚乙二醇200置于150ml不锈钢耐压反应釜中,加入80%釜容积的去离子水,搅拌形成均匀溶液。密封反应釜,在160℃反应12小时。然后冷却至室温,打开反应釜,真空抽滤,以去离子水及无水乙醇洗涤,干燥得棕绿色粉末。产物经X射线粉末衍射鉴定为羟基氧化锰,其XRD图如图1;TEM电镜检测产品形貌,其TEM图如图2,3,4,可以看出纳米花的单根分枝直径为40~100nm,长度为800~1200nm。纳米花的单根分枝电子衍射(图5)证明产品为单晶。在同样条件下,将反应温度控制在100℃或200℃,均可得到多枝状羟基氧化锰纳米花。
实施例2
将0.325克分析纯高锰酸钾和6ml聚乙二醇10000置于150ml不锈钢耐压反应釜中,加入80%釜容积的去离子水,搅拌形成均匀溶液。密封反应釜,在160℃反应12小时。然后冷却至室温,打开反应釜,真空抽滤,以去离子水及无水乙醇洗涤,干燥得棕绿色粉末。产物经X射线粉末衍射鉴定为羟基氧化锰;TEM电镜检测产品形貌:直径40~120nm,长度800~1000nm。纳米花的单根分枝电子衍射证明产品为单晶。在同样条件下,将反应温度控制在100℃或200℃,均可得到多枝状羟基氧化锰纳米花。
实施例3
将0.325克分析纯高锰酸钾和12ml聚乙二醇20000置于150ml不锈钢耐压反应釜中,加入80%釜容积的去离子水,搅拌形成均匀溶液。密封反应釜,在160℃反应12小时。然后冷却至室温,打开反应釜,真空抽虑,以去离子水及无水乙醇洗涤,干燥得棕绿色粉末。产物经X射线粉末衍射鉴定为羟基氧化锰;TEM电镜检测产品形貌:直径40~160nm,长度600~1000nm。纳米花的单根分枝电子衍射证明产品为单晶。在同样条件下,将反应温度控制在100℃或200℃,均可得到多枝状羟基氧化锰纳米花。
Claims (2)
1.一种制备多枝状羟基氧化锰单晶纳米花的方法,其步骤如下:
1)将高锰酸钾和聚乙二醇按物质的量之比为0.5~3∶10~20加入到去离子水中,搅拌至均匀溶液;
2)将上述溶液放入密闭容器反应釜中,在100~200℃温度条件下反应8~16小时,然后冷却至室温,过滤、洗涤、干燥,即可。
2.根据权利要求1所述的制备多枝状羟基氧化锰单晶纳米花的方法,其特征是所说的聚乙二醇为聚乙二醇200、聚乙二醇10000或聚乙二醇20000。
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CN102531064A (zh) * | 2010-12-13 | 2012-07-04 | 西安迈克森新材料有限公司 | 一种制备羟基氧化锰超细单晶纳米线的方法 |
CN103496745B (zh) * | 2013-10-09 | 2015-04-29 | 南京信息工程大学 | 多枝状纳米γ-MnOOH的制备方法 |
CN104229780A (zh) * | 2014-08-30 | 2014-12-24 | 长春工业大学 | 一种石墨烯基复合物的制备方法 |
CN104211123A (zh) * | 2014-09-16 | 2014-12-17 | 吉林大学 | 一种锰氧化物纳米棒的制备方法 |
CN104658763B (zh) * | 2015-01-21 | 2017-03-15 | 西北大学 | 一种二氧化锰树枝状纳米阵列电极材料及制备方法 |
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CN1377832A (zh) * | 2002-01-18 | 2002-11-06 | 清华大学 | 一种合成不同晶型二氧化锰一维单晶纳米线的方法 |
JP2004059379A (ja) * | 2002-07-30 | 2004-02-26 | National Institute Of Advanced Industrial & Technology | 岩塩型結晶構造を有する二酸化マンガン結晶及びその製造方法 |
CN1715460A (zh) * | 2004-07-02 | 2006-01-04 | 中国科学院金属研究所 | α-MnO2单晶纳米棒的制备方法 |
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CN1377832A (zh) * | 2002-01-18 | 2002-11-06 | 清华大学 | 一种合成不同晶型二氧化锰一维单晶纳米线的方法 |
JP2004059379A (ja) * | 2002-07-30 | 2004-02-26 | National Institute Of Advanced Industrial & Technology | 岩塩型結晶構造を有する二酸化マンガン結晶及びその製造方法 |
CN1715460A (zh) * | 2004-07-02 | 2006-01-04 | 中国科学院金属研究所 | α-MnO2单晶纳米棒的制备方法 |
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